Feed bold



F. BOLD.

LUBRIGATOR.

Patented Sept. 8, 1885.

UNITED STATES PATENT OFFICE.

FEED BOLD, on ST. LOUIS, MISSOURI, ASSIGNO'R OE ONEHALE To WILLIAM M. STANTON, OE SAME PLAGE.

SPECIFICATION forming part of Letters Patent No. 325,904, dated September 8, 1885.

y Application sied my 1, Issa. (No model.) l

To all whomjt may concern:

Be it known that I, FRED BOLD, of the city of St. Louis, in the'State of Missouri, have invented a certain new and useful Improvement in Lubricators, of which the following` is a full, clear, and eXact description, lreference being had to the accompanying drawings,form ing part of this speciication.

. Figure l is a Side view of the lubrioator with part ofthe screw-cap broken away. Fig. 2 is a vertical section at 2 2, Fig. 1. Fig. 3 is a transversesection at 3 3, Fig. 2. Fig. 4 is a transverse section at 4 4,.Fig. 2. Fig. 5

is a transverse section at 5 5, Fig. 2, with the valve removed.

r[his lubricator belongs to the class in which water resulting' from the condensation of the steam within the lnbricator causes theoveriiow of oil into a dischargetube.

The body of the lubricator is shown as cast in one piece; but I do not confine myself to this construction.

A is the oil-cup, and B the oil-chamber.

C is a Screw-threaded nipple, by which the lubricator is secured to the steam-chest, cyl-l inder, or other object.

D is a tube extending upward from the bottoln of the cup, and having at top a conical valve-seat, E, the bore F of the tube extending down through the nipple C. .w

G is the tubular neck ofthe cup, which has interior and exterior screw-threads. The valve His formed to fit the seat E. Its stein I has a screw-threaded part or collar, J working in the female screw of the neck, and an angular top, K, to which an adjusting key or wrench is applied to raise or lower the valve.

L is ajam-nut, which also Works in the female screw of the neck G, and which serves to hold the valve to its adjustment, the bottom ofthe nut bearing upon thetop of the collar J.

M is the angular part of the jam-nut, to which the wrench or key is applied to turn it.

N is the Screw-cap, which turns on the male Screw of the neck G, and which has at bottom an annular rim or flange, O, bearing, when the cap isrscrewed down, upon the soft-metal Seat P, which is cast in an annular dovetail recess,

made in the top of the oilcup. I prefer to form the recess or groove Q wide enough to allow the annular rim or flange O to enter the recess as the soft metal wears away.

At the upper end of the screwoap N is aY steam-condensing chamber, R, into which the steam is allowed to enter from the oilvchamber B, and from whichthe water of condensation returns to the chamber and raises the surface of the oil and causes it to overiow the upper end of the tube D. As a means for this passage of Steam and water, I show a` vertical groove, S, cut in the innerside ofthe neck G, and apassage, T, extending through the co1- lar J and communicating with an annular passage at U between the jam-nut and the valvestem. Either or both these means of communication between .the oil chamber and con densing-chamber may be used, or equivalent means for these purposes.

V are oricesin the sides of the neck,through which the oil is poured in when the cap has been raised a small distance, the lling of course being done when there is no steampressure within the oil-chamber.

W is the waste-pipe, having at the mouth a 4counter-bore, X, and within thatafemale screw,

Y, in which works the tubular stem Z ofthe plug, by which the mouth of the drain-passage is closed. The face of the ange b of the plug is formed with an annulus, a, of soft metalrun into a dovetail annular groove of the flange-head b. The annular plug-seat c is preferably made so thin as to enter the dovetail groove containing the soft-metal facing as the metal of the facing wears away.

d is an aperture in the Side of the tubular stem to allow the escape of liquidfrom the oil-cup when the plug is Opened by turning out the valvevstem a short distance.

It will be seen that as in discharging it is not necessary to remove the plug-stern Z from the dischargeniouth, so it is not needed in filling the oil-chamber to remove the'cap N from the neck G, it being only necessary to remove the cap to allow adjustment of the valve H. l

l. `The combination of anoil-cup formed with a screw-threaded neck, G, having an orfice, V, in its side, a seat having a recess surrounding said neck, a soft-metal fillingin said IOO recess, and a cap, N, havingau interior screwthread by which it is secured to said neck, and a rim or ange, O, bearing on said filling, substantially as set forth.

2. The combination of' an oil-cup formed with a dovetail annular recess, Q, and aser-ewthreaded neck, G, having an orifice, V, in its side, a soft-metal seat occupying said recess, and a cap, N, screwing on said neck, and having a fiange or rim, O, seating on said scat, substantially as set forth.

3. The combination of an oil-cup formed with an interiorly screw-threaded neck, G, a valve, H, having a stem, I, formed with a screw-threaded portion, J, Within the neck G, and a tubular jam-nut, L, seating on saidportion Within said neck,substant-ially as set forth.

4. The combination of an oil-cup formed with a waste-pipe, W, havinga counter-bore, X, at the mouth, and interior screw-thread,

`Y, and a hollow plug, Z, having a flange, b, 

